Holier Than Thou - Biblical Contradictions

Who was high priest when David and his men ate the consecrated bread, Ahimelech or Abiathar?

1 Samuel 21:1-6, "David went to Nob, to Ahimelech the priest. Ahimelech trembled when he met him, and asked, 'Why are you alone? Why is no one with you?' David answered Ahimelech the priest, 'The king charged me with a certain matter and said to me, 'No one is to know anything about your mission and your instructions.' As for my men, I have told them to meet me at a certain place. Now then, what do you have on hand? Give me five loaves of bread, or whatever you can find.' But the priest answered David, 'I don't have any ordinary bread on hand; however, there is some consecrated bread here-provided the men have kept themselves from women.' David replied, 'Indeed women have been kept from us, as usual whenever I set out. The men's things are holy even on missions that are not holy. How much more so today!' So the priest gave him the consecrated bread, since there was no bread there except the bread of the Presence that had been removed from before the LORD and replaced by hot bread on the day it was taken away."

2 Samuel 22:20-22, "But Abiathar, a son of Ahimelech son of Ahitub, escaped and fled to join David. He told David that Saul had killed the priests of the LORD. Then David said to Abiathar: 'That day, when Doeg the Edomite was there, I knew he would be sure to tell Saul. I am responsible for the death of your father's whole family.' "

Mark 2:25-26, "He answered, 'Have you never read what David did when he and his companions were hungry and in need? In the days of Abiathar the high priest, he entered the house of God and ate the consecrated bread, which is lawful only for priests to eat. And he also gave some to his companions.' "

According to 1 Samuel chapter 21, Ahimelech was high priest when David and his men went to Nob and ate the loaves of consecrated bread, however, according to Mark chapter 2, Jesus said that it was Ahimelech's son Abiathar who was high priest during this incident.

"Sorrow is better than laughter: for by the sadness of the countenance the heart is made better. The heart of the wise is in the house of mourning; but the heart of fools is in the house of mirth." (Ecclesiastes 7:3-4, KJV)

"Then I commended mirth, because a man hath no better thing under the sun, than to eat, and to drink, and to be merry: for that shall abide with him of his labour the days of his life, which God giveth him under the sun." (Ecclesiastes 8:15, KJV)