If we lack wisdom, God invites us to ask Him for more; He gives to all liberally, and doesn’t scold us for asking. (Ja 1:5) In believing God will help us, as we ask Him for good things, we honor Him by acknowledging His faithfulness and goodness, and trusting Him. It shows we understand His character, and expect Him to act accordingly.
But if we don’t ask in faith, confidently knowing He’ll help us (Ja 1:6), we shouldn’t expect anything from Him (Ja 1:7); we’re acting as if God isn’t good or faithful, which exposes a double-mindedness, an instability at the core of who we are. (Ja 1:8) How so?
Being unsure of God’s willingness to help us with wisdom, when He’s told us wisdom is the most important thing in all the world, and that with all of our getting we’re to be getting understanding (Pr 4:7), is to treat Him as if He is malicious, arbitrary and fickle. This is doubting His goodness and love at the core. If we don’t trust the faithfulness of God, if we don’t even know Him, we need His help here first.
Doubting Him on His willingness to give us wisdom, or any obviously good thing, is like thinking He’d refuse to help us find Him (He 11:6), or to help us follow and serve Him. (2Th 3:3) It’s to reject everything He’s told us about Himself; it’s calling Him a liar (1Jn 5:10) and denying His name. At the core of our own being, we know better than this — God isn’t evil — which makes us double-minded.
If we’re content to dishonor God like this, believing lies about Him rather than seeking His grace to believe rightly in Him, He just might let us. (Pr 14:12) And it would be our own fault. (Jn_3:19)
But if we humble ourselves and come to Him (Mt 11:28), seeking His face, casting our insufficiency upon Him (1Pe 5:7) and begging Him to quicken us (Ps 119:156), to give us His life (Jn 1:4), to help us find Him and walk worthy of Him, He most certainly will. (Mt 7:8) That’s just Who He is.