'Truly' in the Bible

Is the law then against the words of God? in no way; because if there had been a law which was able to give life, truly righteousness would have been by the law.

But now that you have come to have knowledge of God, or more truly, God has knowledge of you, how is it that you go back again to the poor and feeble first things, desiring to be servants to them again?

Truly my desire is to be present with you now, using a changed voice; for I am troubled about you.

Christ has truly made us free: then keep your free condition and let no man put a yoke on you again.