Galatians 5:3

and I testify again to every man circumcised, that he is a debtor to do the whole law;

Luke 16:28

for I have five brothers, so that he may thoroughly testify to them, that they also may not come to this place of torment.

Galatians 3:10

for as many as are of works of law are under a curse, for it hath been written, 'Cursed is every one who is not remaining in all things that have been written in the Book of the Law -- to do them,'

Deuteronomy 8:19

And it hath been -- if thou really forget Jehovah thy God, and hast gone after other gods, and served them, and bowed thyself to them, I have testified against you to-day that ye do utterly perish;

Deuteronomy 27:26

Cursed is he who doth not establish the words of this law, to do them, -- and all the people have said, Amen.

Deuteronomy 31:21

'And it hath been, when many evils and distresses do meet it, that this song hath testified to its face for a witness; for it is not forgotten out of the mouth of its seed, for I have known its imagining which it is doing to-day, before I bring them in unto the land of which I have sworn.'

Nehemiah 9:29-30

and dost testify against them, to bring them back unto Thy law; and they -- they have acted proudly, and have not hearkened to Thy commands, and against Thy judgments have sinned, -- which man doth and hath lived in them -- and they give a refractory shoulder, and their neck have hardened, and have not hearkened.

Nehemiah 9:34

and our kings, our heads, our priests, and our fathers, have not done Thy law, nor attended unto Thy commands, and to Thy testimonies, that Thou hast testified against them;

Matthew 23:16

Woe to you, blind guides, who are saying, Whoever may swear by the sanctuary, it is nothing, but whoever may swear by the gold of the sanctuary -- is debtor!

Matthew 23:18

And, whoever may swear by the altar, it is nothing; but whoever may swear by the gift that is upon it -- is debtor!

Acts 2:40

Also with many more other words he was testifying and exhorting, saying, 'Be saved from this perverse generation;'

Acts 20:21

testifying fully both to Jews and Greeks, toward God reformation, and faith toward our Lord Jesus Christ.

Romans 2:25

For circumcision, indeed, doth profit, if law thou mayest practise, but if a transgressor of law thou mayest be, thy circumcision hath become uncircumcision.

Ephesians 4:17

This, then, I say, and I testify in the Lord; ye are no more to walk, as also the other nations walk, in the vanity of their mind,

1 Thessalonians 4:6

that no one go beyond and defraud in the matter his brother, because an avenger is the Lord of all these, as also we spake before to you and testified,

James 2:10-11

for whoever the whole law shall keep, and shall stumble in one point, he hath become guilty of all;

1 John 4:14

And we -- we have seen and do testify, that the Father hath sent the Son -- Saviour of the world;

Treasury of Scripture Knowledge

Summary

For I testify again to every man that is circumcised, that he is a debtor to do the whole law.

Bible References

Testify

Deuteronomy 8:19
And it hath been -- if thou really forget Jehovah thy God, and hast gone after other gods, and served them, and bowed thyself to them, I have testified against you to-day that ye do utterly perish;
Deuteronomy 31:21
'And it hath been, when many evils and distresses do meet it, that this song hath testified to its face for a witness; for it is not forgotten out of the mouth of its seed, for I have known its imagining which it is doing to-day, before I bring them in unto the land of which I have sworn.'
Nehemiah 9:29
and dost testify against them, to bring them back unto Thy law; and they -- they have acted proudly, and have not hearkened to Thy commands, and against Thy judgments have sinned, -- which man doth and hath lived in them -- and they give a refractory shoulder, and their neck have hardened, and have not hearkened.
Luke 16:28
for I have five brothers, so that he may thoroughly testify to them, that they also may not come to this place of torment.
Acts 2:40
Also with many more other words he was testifying and exhorting, saying, 'Be saved from this perverse generation;'
Acts 20:21
testifying fully both to Jews and Greeks, toward God reformation, and faith toward our Lord Jesus Christ.
Ephesians 4:17
This, then, I say, and I testify in the Lord; ye are no more to walk, as also the other nations walk, in the vanity of their mind,
1 Thessalonians 4:6
that no one go beyond and defraud in the matter his brother, because an avenger is the Lord of all these, as also we spake before to you and testified,
1 John 4:14
And we -- we have seen and do testify, that the Father hath sent the Son -- Saviour of the world;

A debtor

Galatians 3:10
for as many as are of works of law are under a curse, for it hath been written, 'Cursed is every one who is not remaining in all things that have been written in the Book of the Law -- to do them,'
Deuteronomy 27:26
Cursed is he who doth not establish the words of this law, to do them, -- and all the people have said, Amen.
Matthew 23:16
Woe to you, blind guides, who are saying, Whoever may swear by the sanctuary, it is nothing, but whoever may swear by the gold of the sanctuary -- is debtor!

General references

Leviticus 12:3
and in the eighth day is the flesh of his foreskin circumcised;
Luke 5:38
but new wine into new skins is to be put, and both are preserved together;
Galatians 2:3
but not even Titus, who is with me, being a Greek, was compelled to be circumcised --
Philippians 3:7
But what things were to me gains, these I have counted, because of the Christ, loss;