The corresponding letter to this chapter is Divine power; provision; protection.
Sh’mu’el Alef 21:1-6 Then David came to Nob to Achimelekh the priest; and Achimelekh came trembling to meet David, and said to him, "Why are you alone and no one with you?" And David said to Achimelekh the priest, "The king has commissioned me with a matter, and has said to me, 'Let no one know anything about the matter on which I am sending you and with which I have commissioned you; and I have directed the young men to a certain place.' "Now therefore, what do you have on hand? Give me five loaves of bread, or whatever can be found." And the priest answered David and said, "There is no ordinary bread on hand, but there is consecrated bread; if only the young men have kept themselves from women." And David answered the priest and said to him, "Surely women have been kept from us as previously when I set out and the vessels of the young men were holy, though it was an ordinary journey; how much more then today will their vessels be holy?" So the priest gave him consecrated bread; for there was no bread there but the bread of the Presence which was removed from before the L-RD, in order to put hot bread in its place when it was taken away.
David, like Yeshua, fed himself when it was not correct to do so. But out of necessity was permitted for sustaining his life.
Mattityahu (Matthew) 12:1-7 At that time Yeshua went on the Shabbat through the grainfields, and His disciples became hungry and began to pick the heads of grain and eat. But when the P’rushim (Pharisees) saw it, they said to Him, "Behold, Your disciples do what is not lawful to do on a Shabbat." But He said to them, "Have you not read what David did, when he became hungry, he and his companions; how he entered the house of G-d, and they ate the consecrated bread, which was not lawful for him to eat, nor for those with him, but for the priests alone? "Or have you not read in the Law, that on the Shabbat the priests in the temple break the Shabbat, and are innocent? "But I say to you, that something greater than the temple is here.
Sh’mu’el Alef 21:7-10 Now one of the servants of Sha’ul was there that day, detained before the L-RD; and his name was Do’eg the Edomi, the chief of Sha’ul's shepherds. And David said to Achimelekh, "Now is there not a spear or a sword on hand? For I brought neither my sword nor my weapons with me, because the king's matter was urgent." Then the priest said, "The sword of Golyat (Goliath) the P’lishti, whom you killed in the valley of Elah, look, it is wrapped in a cloth behind the ephod; if you would take it for yourself, take it. For there is no other except it here." And David said, "There is none like it; give it to me." Then David arose and fled that day from Sha’ul, and went to Akhish king of Gat.
David had become an outcast from his people. G-d protected him from harm.
Sh’mu’el Alef 21:11-15 But the servants of Akhish said to him, "Is this not David the king of the land? Did they not sing of this one as they danced, saying, 'Sha’ul has slain his thousands, And David his ten thousands'?" And David took these words to heart, and greatly feared Akhish king of Gat. So he disguised his sanity before them, and acted insanely in their hands, and scribbled on the doors of the gate, and let his saliva run down into his beard. Then Akhish said to his servants, "Look, you see the man behaving as a madman. Why do you bring him to me? "Do I lack madmen, that you have brought this one to act the madman in my presence? Shall this one come into my house?"
He was in Golyat (Goliath’s) hometown and was out numbered. David could have admitted who he was and let the L-rd deliver him. Instead he chose to try and out wit his enemy with a very clever plan. He pretended to be insane, so he would not be recognized. His plan worked and David was spared.