'Stealthily' in the Bible

David’s men said to him, “Behold, this is the day of which the Lord said to you, ‘Behold, I will hand over your enemy to you, and you shall do to him as seems good to you.’” Then David arose [in the darkness] and stealthily cut off the hem (edge) of Saul’s robe.

David rose and stealthily cut off the corner of Saul's robe. Afterwards, David's conscience bothered him because he had cut off the corner of Saul's robe.

The people stole into the city [of Mahanaim] that day, as people who are humiliated and ashamed steal away when they retreat in battle.

“Now a word was brought to me stealthily,And my ear received a whisper of it.

He sits in the lurking places of the villages;In the hiding places he kills the innocent;His eyes stealthily watch for the unfortunate.

In a time of tranquility, [without warning] he will enter the most productive and richest parts of the kingdom [of Egypt], and he will accomplish that which his fathers never did, nor his fathers’ fathers; he will distribute plunder, spoil and goods among them. He will devise plans against strongholds, but only for a time [decreed by God].

Being asked by the Pharisees when the Kingdom of God was coming, He answered, "The Kingdom of God does not so come that you can stealthily watch for it.

You who boast in the Law, do you [repeatedly] dishonor God by breaking the Law?

But [in those days] false prophets arose among the people, just as there will be false teachers among you, who will subtly introduce destructive heresies, even denying the Master who bought them, bringing swift destruction on themselves.

For certain people have crept in unnoticed [just as if they were sneaking in by a side door]. They are ungodly persons whose condemnation was predicted long ago, for they distort the grace of our God into decadence and immoral freedom [viewing it as an opportunity to do whatever they want], and deny and disown our only Master and Lord, Jesus Christ.