'Yet' in the Bible

For do I now persuade men, or God? or do I seek to please men? for if I yet pleased men, I should not be the servant of Christ.

I am crucified with Christ: nevertheless I live; yet not I, but Christ liveth in me: and the life which I now live in the flesh I live by the faith of the Son of God, who loved me, and gave himself for me.

Have ye suffered so many things in vain? if it be yet in vain.

Brethren, I speak after the manner of men; Though it be but a man's covenant, yet if it be confirmed, no man disannulleth, or addeth thereto.

And I, brethren, if I yet preach circumcision, why do I yet suffer persecution? then is the offence of the cross ceased.