KJV: And the evil spirit from the LORD was upon Saul, as he sat in his house with his javelin in his hand: and David played with his hand.
NASB: Now there was an evil spirit from the LORD on Saul as he was sitting in his house with his spear in his hand, and David was playing the harp with his hand.
KJV: And David sware moreover, and said, Thy father certainly knoweth that I have found grace in thine eyes; and he saith, Let not Jonathan know this, lest he be grieved: but truly as the LORD liveth, and as thy soul liveth, there is but a step between me and death.
NASB: Yet David vowed again, saying, "Your father knows well that I have found favor in your sight, and he has said, 'Do not let Jonathan know this, or he will be grieved.' But truly as the LORD lives and as your soul lives, there is hardly a step between me and death."
KJV: Therefore thou shalt deal kindly with thy servant; for thou hast brought thy servant into a covenant of the LORD with thee: notwithstanding, if there be in me iniquity, slay me thyself; for why shouldest thou bring me to thy father?
NASB: "Therefore deal kindly with your servant, for you have brought your servant into a covenant of the LORD with you. But if there is iniquity in me, put me to death yourself; for why then should you bring me to your father?"
KJV: And Jonathan said unto David, O LORD God of Israel, when I have sounded my father about to morrow any time, or the third day, and, behold, if there be good toward David, and I then send not unto thee, and shew it thee;
NASB: Then Jonathan said to David, "The LORD, the God of Israel, be witness! When I have sounded out my father about this time tomorrow, or the third day, behold, if there is good feeling toward David, shall I not then send to you and make it known to you?
KJV: The LORD do so and much more to Jonathan: but if it please my father to do thee evil, then I will shew it thee, and send thee away, that thou mayest go in peace: and the LORD be with thee, as he hath been with my father.
NASB: "If it please my father to do you harm, may the LORD do so to Jonathan and more also, if I do not make it known to you and send you away, that you may go in safety. And may the LORD be with you as He has been with my father.
KJV: But also thou shalt not cut off thy kindness from my house for ever: no, not when the LORD hath cut off the enemies of David every one from the face of the earth.
NASB: "You shall not cut off your lovingkindness from my house forever, not even when the LORD cuts off every one of the enemies of David from the face of the earth."
KJV: And, behold, I will send a lad, saying, Go, find out the arrows. If I expressly say unto the lad, Behold, the arrows are on this side of thee, take them; then come thou: for there is peace to thee, and no hurt; as the LORD liveth.
NASB: "And behold, I will send the lad, saying, 'Go, find the arrows.' If I specifically say to the lad, 'Behold, the arrows are on this side of you, get them,' then come; for there is safety for you and no harm, as the LORD lives.