1)
What is the meaning of "Lo Yasim Elokim Ma'ozu"?
1.
Radak: He did not fear lest Hashem pay him for the evil that he spoke, and did not trust in Hashem.
2)
How did he trust in his wealth?
1.
Malbim: He thought that Sha'ul will make him wealthy [for informing on Achimelech].
3)
What is the meaning of "Ya'oz b'Havaso"?
1.
Rashi: He became more powerful in his evil.
2.
Radak citing Rav Sadya Gaon: This repeats that he trusted in his money.
3.
Malbim: What he thought would strengthen himself (telling David that he killed Sha'ul - refer to 52:6:2:2) caused his own evil and breakage.