'Smooth' in the Bible

Jacob said to Rebekah his mother, “Listen, Esau my brother is a hairy man and I am a smooth [skinned] man.

And she put the skins of the young goats on his hands and on the smooth part of his neck.

Then he took his [shepherd’s] staff in his hand and chose for himself five smooth stones out of the stream bed, and put them in his shepherd’s bag which he had, that is, in his shepherd’s pouch. With his sling in his hand, he approached the Philistine.

For there is nothing trustworthy or reliable or truthful in what they say;Their heart is destruction [just a treacherous chasm, a yawning gulf of lies].Their throat is an open grave;They [glibly] flatter with their [silken] tongue.

That they may keep you from the immoral woman,From the foreigner [who does not observe God’s laws and] who flatters with her [smooth] words.

Does the farmer plow all day to plant seed?Does he continually dig furrows and harrow his ground [after it is prepared]?

Who say to the seers, “You must not see visions from God”;And to the prophets, “You must not prophesy to us what is right!Speak to us pleasant things and smooth words,Prophesy [deceitful] illusions [that we will enjoy].

A voice of one is calling out,“Clear the way for the Lord in the wilderness [remove the obstacles];Make straight and smooth in the desert a highway for our God.

“Among the smooth stones of the ravineIs your portion, they (the idols) are your lot;Even to them you have poured out a drink offering,You have offered a grain offering.Should I be quiet concerning these things [leaving them unpunished—bearing them with patience]?