'Softly' in the Bible

But Ja'el the wife of Heber took a tent peg, and took a hammer in her hand, and went softly to him and drove the peg into his temple, till it went down into the ground, as he was lying fast asleep from weariness. So he died.

And Boaz ate and drank, and his heart was merry, and he went to lie down at the end of the heap of corn. Then she went softly, and uncovered his feet, and laid herself down.

And it came to pass when Ahab heard these words, that he rent his garments, and put sackcloth upon his flesh, and fasted, and lay in sackcloth, and went softly.

Will he make many supplications unto thee? or will he speak softly unto thee?

Forasmuch as this people refuseth the waters of Shiloah which flow softly, and rejoiceth in Rezin and in the son of Remaliah,

What shall I say? He hath both spoken unto me, and himself hath done it. I shall go softly all my years in the bitterness of my soul.