The Bible clearly mentions that Church is the Ground of Truth, The Manifold of Wisdom. No mention in the Bible that Scripture is the only ground of truth.

Unlike the Sola Scriptura or Bible Alone and forget the Church theory of

 the anti catholics which is unfounded as per the Bible, the Holy Bible

 teaches that the ‘church is the manifold of wisdom’ to which ‘the hidden

 mysteries are revealed’ for ‘all men to see’ not a hidden or invisible

church then, but one’ for all men to see’. Mysteries are revealed to the

 church, and the church gives it to us in the written form of the Bible.

 Similarly in the Old Testament it was the church that ‘received the

 oracles’ and ‘gave it to us’(Acts 7:38).

The church is the ‘manifold of wisdom.

The church is also the ‘pillar and bulwark of

 truth’.

‘The gates of hell shall not prevail against the

 church’

‘The Holy Spirit is with the church ‘forever’ and

 He guides the church into ‘all truth’.

Jn 14:16 His Holy Spirit is with the church forever.

Joh:14:16: And I will pray the Father, and he shall give you

 another Comforter, that he may abide with you for ever.

Joh:16:12-14 His Spirit will guide the church into all truth.

Joh:16:12-14: I have yet many things to say unto you, but ye

 cannot bear them now. Howbeit when he, the Spirit of truth,

 is come, he will guide you into all truth:

Mt 16:18 Gates of hell shall not prevail against the church.

M't:16:18: And I say also unto thee, That thou art Peter, and

upon this rock I will build my church; and the gates of hell

shall not prevail against it.

1Tim 3:15 Church is the pillar and bulwark of truth

1Tm:3:15: But if I tarry long, that thou mayest know how thou

 oughtest to behave thyself in the house of God, which is the church of the living God, the pillar and ground of the truth.

Eph 3:9,10 Church is the manifold of wisdom to which the hidden mysteries

                  from the beginning have ‘now’ been revealed. For men to ‘see’.

Eph:3:9,10: And to make all men see what is the fellowship of

 the mystery, which from the beginning of the world hath

 been hid in God, who created all things by Jesus Christ: To the

 intent that now unto the principalities and powers in heavenly

 places might be known by the church the manifold wisdom of

 God.

The church is the ‘fulness of Christ Himself’. (Eph:1:22-23).

And hath put all things under his feet, and gave him to be the

 head overall things to the church, Which is his body, the

 fulness of him that filleth all in all.

The church being the Pilar of truth, the manifold of wisdom and the ‘fulness of Christ Himself’, it is the church alone that has the authority to interpret what was revealed to it.

Thus, Peter declares, as like the Old Testament, the church is the sole interpreter of the scriptures. No scripture is  for private interpretation. Interpretation done ‘privily’ leads to damnable heresies. (1Pet 1:19-21, 2:1,2; 3:16,17)

In the Old Testament, it was the church that had the authority to interpret scriptures.

Malachi 2:6-8 "True instruction was in his mouth, and no wrong

 was found on his lips. He walked with me in peace and

 uprightness, and he turned many from iniquity. For the lips of

 a priest should guard knowledge, and men should seek

 instruction from his mouth, for he is the messenger of the

 LORD of hosts."

Ac:7:38: This is he, that was in the church in the wilderness

 with the angel which spake to him in the mount Sina, and with

 our fathers: who received the lively oracles to give unto us:

M't:23:1-3: Then spake Jesus to the multitude, and to his

 disciples, Saying, The scribes and the Pharisees sit in Moses'

 seat: All therefore whatsoever they bid you observe, [that]

 observe and do; but do not ye after their works: for they say,

 and do not.

M'r:9:11: And they asked him, saying, Why say the scribes that

 Elias must first come?

M't:7:29: For he taught them as one having authority, and not

 as the scribes.

M'r:1:22: And they were astonished at his doctrine: for he taught

 them as one that had authority, and not as the scribes.

M'r:12:35: And Jesus answered and said, while he taught in the

 temple, How say the scribes that Christ is the Son of David?

Similarly, in the New Testament,

Church ministers are the stewards of the mysteries. (1Cor:4:1; Eph 3:4-5).

1Cor 4:1 Let a man so account of us, as of the ministers of

 Christ, and stewards of the mysteries of God. 

Eph:3:4-5: Whereby, when ye read, ye may understand my

 knowledge in the mystery of Christ) Which in other ages was

 not made known unto the sons of men, as it is now revealed

 unto his holy apostles and prophets by the Spirit;

The mission to teach was given to the church. (M't:28:19, 20).

Go ye therefore, and teach all nations, baptizing them in the

 name of the Father, and of the Son, and of the Holy Ghost:

 Teaching them to observe all things whatsoever I have

 commanded you: and, lo, I am with you alway, even unto the

 end of the world. Amen.

Peter, clearly admonishes that just as in the Old Testament, Interpretation of scripture is to be done by the ‘holy men of God’ i.e. the church moved by the Holy Spirit, and not for private interpretation. Because just as false prophets existed at the time of the prophets, false teachers who ‘privily’ or through private interpretation shall bring in damnable heresies. Interpretation is the mission of the church ‘moved by the Holy Spirit’. (2Pet 1:19-21; 2:1-3; 3:16-17). It is to the church that revelation was made, as St Paul says in Eph 3:9-10.

2Pe:1:19-21; 2:1, 2; 3:16-17: We have also a more sure word of

 prophecy; whereunto ye do well that ye take heed, as unto a

 light that shineth in a dark place, until the day dawn, and the

 day star arise in your hearts: Knowing this first, that no

 prophecy of the scripture is of any private interpretation. For

 the prophecy came not in old time by the will of man: but

 holy men of God spake as they were moved by the Holy

 Ghost. But there were false prophets also among the people,

 even as there shall be false teachers among you, who privily

(private interpretation) shall bring in damnable heresies,

 even denying the Lord that bought them, and bring upon

 themselves swift destruction. And many shall follow their

 pernicious ways; by reason of whom the way of truth shall be

 evil spoken of.

The only church seen and known to accept the Church as the ground of truth and manifold of wisdom and  being in succession to the One and only church instituted by Christ Himself is the Catholic church. 

    Next>>     2. A Church Witnessing unto all nations,

                           so undoubtedly one Visible to all