1 Timothy 6:3

If any one teaches other things, and does not assent to the sound words of our Lord Jesus Christ, and to the teaching which is according to godliness,

Revelation 2:7

He that has an ear, let him hear what the Spirit says to the churches: To him that overcomes, I will give to eat of the tree of life, which is in the paradise of God.

Treasury of Scripture Knowledge

Summary

A wholesome tongue is a tree of life: but perverseness therein is a breach in the spirit.

Bible References

A tree

1 Timothy 6:3
If any one teaches other things, and does not assent to the sound words of our Lord Jesus Christ, and to the teaching which is according to godliness,
Revelation 2:7
He that has an ear, let him hear what the Spirit says to the churches: To him that overcomes, I will give to eat of the tree of life, which is in the paradise of God.