Since the early days of Christianity, people have made a distinction between how God acts in the Old Testament verses how He acts in the New Testament. Marcion wrote his Antitheses (= contradictory statements) contrasted the Old Testament God of wrath with Jesus’ God of love and mercy. He says that the God of the New Testament and the God of the Old Testament are antithetical, that is They are in direct and unequivocal opposition.
Some people today see it as an irreconcilable difference and thus use it to question the existence of God.
“All Israel shall mourn for him and bury him, for he alone of Jeroboam’s family will come to the grave, because in him something good was found toward the Lord God of Israel in the house of Jeroboam." 1 Kings 14:13 NASB
“There also we saw the Nephilim (the sons of Anak are part of the Nephilim); and we became like grasshoppers in our own sight, and so we were in their sight.” – NASB Num. 13:33