Thou wast perfect in thy ways from the day that thou wast created, till iniquity was found in thee.
Thou wast perfect in thy ways - prosperous (Grotius), and having no defect. So Hiram was a sample of the Tyrian monarch in his early days of wisdom and prosperity, (1 Kings 5:7, etc.)
Till iniquity was found in thee - like the primeval man, thou hast fallen by abusing God's gifts, and so hast provoked God's wrath.