1 Samuel 20:4

2 “Far from it!” Jonathan replied. “You will not die. Indeed, my father does nothing, great or small, without telling me. So why would he hide this matter from me? This cannot be true!”

3 But David again vowed, “Your father knows very well that I have found favor in your eyes, and he has said, ‘Jonathan must not know of this, or he will be grieved.’ As surely as the LORD lives and as you yourself live, there is but a step between me and death.”

Then Jonathan said to David, “Whatever you desire, I will do for you.”

5 So David told him, “Look, tomorrow is the New Moon, and I am supposed to dine with the king. Instead, let me go and hide in the field until the third evening from now.

6 If your father misses me at all, tell him, ‘David urgently requested my permission to hurry to Bethlehem, his hometown, because there is an annual sacrifice for his whole clan.’

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
Then Jonathan said to David, “Whatever you desire, I will do for you.”
KJV
Then said Jonathan unto David, Whatsoever thy soul desireth, I will even do it for thee.
WEB
Then Jonathan said to David, “Whatever your soul desires, I will even do it for you.”
ASV
Then said Jonathan unto David, Whatsoever thy soul desireth, I will even do it for thee.
DARBY
And Jonathan said to David, What thy soul may say, I will even do it for thee.
BLB
And Jonathan said to David, “What your soul says, I will do for you.”
ÅB
Da sa Jonatan til David: Alt hva du ønsker, vil jeg gjøre for deg.
OTB
Da forsikret Jonatan David: "Jeg vil gjøre hva du enn ber om."
B1930
Da sa Jonatan til David: Alt hvad du ønsker, vil jeg gjøre for dig.

Study notes (Tyndale)

Original text and word study