'Within' in the Bible

My son, if you accept my wordsand store up my commands within you,

Don’t lose sight of them;keep them within your heart.

For it is pleasing if you keep them within youand if they are constantly on your lips.

for it’s like someone calculating inwardly.“Eat and drink,” he says to you,but his heart is not with you.

A hateful person disguises himself with his speechand harbors deceit within.