'Heartily' in the Bible

“As for me, I baptize you with water because of [your] repentance [that is, because you are willing to change your inner self—your old way of thinking, regret your sin and live a changed life], but He (the Messiah) who is coming after me is mightier [more powerful, more noble] than I, whose sandals I am not worthy to remove [even as His slave]; He will baptize you [who truly repent] with the Holy Spirit and [you who remain unrepentant] with fire (judgment).

From that time Jesus began to preach and say, “Repent [change your inner self—your old way of thinking, regret past sins, live your life in a way that proves repentance; seek God’s purpose for your life], for the kingdom of heaven is at hand.”

About that time Jesus exclaimed, "I heartily praise Thee, Father, Lord of Heaven and of earth, that Thou hast hidden these things from sages and men of discernment, and hast unveiled them to babes.