Holier Than Thou - Biblical Contradictions

When was the first time that Saul met David?

1 Samuel 16:21-23, "David came to Saul and entered his service. Saul liked him very much, and David became one of his armor-bearers. Then Saul sent word to Jesse, saying, 'Allow David to remain in my service, for I am pleased with him.' Whenever the spirit from God came upon Saul, David would take his harp and play. Then relief would come to Saul; he would feel better, and the evil spirit would leave him."

1 Samuel 17:55-58, "As Saul watched David going out to meet the Philistine, he said to Abner, commander of the army, 'Abner, whose son is that young man?' Abner replied, 'As surely as you live, O king, I don't know.' The king said, 'Find out whose son this young man is.' As soon as David returned from killing the Philistine, Abner took him and brought him before Saul, with David still holding the Philistine's head. 'Whose son are you, young man?' Saul asked him. David said, 'I am the son of your servant Jesse of Bethlehem.' "

According to 1 Samuel chapter 16, Saul first met David before going to battle against the Philistines, however, according to chapter 17, it wasn't until after the battle was over that he met David for the first time.

"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)