'Gratuitously' in the Bible

Heal the infirm, raise the dead, cleanse lepers, cast out demons: ye have received gratuitously, give gratuitously.

and are being justified [declared free of the guilt of sin, made acceptable to God, and granted eternal life] as a gift by His [precious, undeserved] grace, through the redemption [the payment for our sin] which is [provided] in Christ Jesus,

Have I committed sin, abasing myself in order that ye might be exalted, because I gratuitously announced to you the glad tidings of God?