A key verse preachers use to claim God will bring prosperity/wealth if you are generous:

“...give, and it will be given to you. Good measure, pressed down, shaken together, running over, will be put into your lap...” (Luke 6:38)

The context is giving LOVE, GRACE, MERCY & FORGIVENESS, not money. The verse right before it shows this:

“Judge not, and you will not be judged; condemn not, and you will not be condemned; forgive, and you will be forgiven.” (Luke 6:37)

Jesus concludes: “For with the measure you use it will be measured back to you.” (Luke 6:38)

What we are to do and why we are to do it and the reward if we do it is plainly outlined here:

"But love your enemies, and do good, and lend, expecting nothing in return, and your reward will be great, and you will be sons of the Most High, for he is kind to the ungrateful and the evil." (Lk 6:35)

Unlike YHWH, Jesus promises are for His Kingdom in Heaven and not of this world.