(Actually, it should be read "keep dead" the misdeeds of the body.)It's still a "if" - our will has not been bound by God
remain in me - keep my commands
The aide of the Spirit as outlined in the NT in salvific context
For if you live according to the flesh, you will die; but if by the Spirit you put to death the misdeeds of the body, you will live.
From the KJV...
Romans 8:13
"For if ye live after the flesh, ye shall die: but if ye through the Spirit do mortify the deeds of the body, ye shall live.
Colossians 3:5
"Mortify therefore your members which are upon the earth; fornication, uncleanness, inordinate affection, evil concupiscence, and covetousness, which is idolatry:"