Verses with the word form in the New Testament (7 verses):

Mark 16:12
After that he appeared in another form unto two of them, as they walked, and went into the country.

Romans 2:20
An instructor of the foolish, a teacher of babes, which hast the form of knowledge and of the truth in the law.

Romans 6:17
But God be thanked, that ye were the servants of sin, but ye have obeyed from the heart that form of doctrine which was delivered you.

Philippians 2:6
Who, being in the form of God, thought it not robbery to be equal with God:

Philippians 2:7
But made himself of no reputation, and took upon him the form of a servant, and was made in the likeness of men:

2 Timothy 1:13
Hold fast the form of sound words, which thou hast heard of me, in faith and love which is in Christ Jesus.

2 Timothy 3:5
Having a form of godliness, but denying the power thereof: from such turn away.