1 John

1 John 2:3

"And hereby we do know that we know him, if we keep his commandments."

1 John 2:5

"But whoso keepeth his word, in him verily is the love of God perfected: hereby know we that we are in him."

1 John 2:6

"He that saith he abideth in him ought himself also so to walk, even as he walked.

1 John 2:17

"And the world passeth away, and the lust thereof: but he that doeth the will of God abideth for ever."