Contradiction with 2 Samuel 1:5-10
These verses describe a different account from the one given in 2 Samuel 1:2 regarding the Amalekite's report of Saul's death.
2 Samuel 1:5-10: And David said unto the young man that told him, How knowest thou that Saul and Jonathan his son be dead?
Contradiction with 1 Samuel 31:4-5
Contradicts 2 Samuel 1:2 as it states that Saul took his own life, while the Amalekite claims to have killed him according to his report in 2 Samuel 1:2.
1 Samuel 31:4-5: Then said Saul unto his armourbearer, Draw thy sword, and thrust me through therewith; lest these uncircumcised come and thrust me through, and abuse me. But his armourbearer would not; for he was sore afraid. Therefore Saul took a sword, and fell upon it. [abuse...: or, mock me]
Contradiction with 1 Chronicles 10:4-5
Parallels 1 Samuel 31:4-5, meaning Saul fell upon his own sword, whereas the claim in 2 Samuel 1:2 involves an Amalekite.
1 Chronicles 10:4-5: Then said Saul to his armourbearer, Draw thy sword, and thrust me through therewith; lest these uncircumcised come and abuse me. But his armourbearer would not; for he was sore afraid. So Saul took a sword, and fell upon it. [abuse me: or, mock me]
Contradiction with 1 Samuel 28:19
Samuel's prophecy foretold that Saul would die in battle with the Philistines, differing from the Amalekite's report in 2 Samuel 1:2.
1 Samuel 28:19: Moreover the LORD will also deliver Israel with thee into the hand of the Philistines: and to morrow [shalt] thou and thy sons [be] with me: the LORD also shall deliver the host of Israel into the hand of the Philistines.