Trust is of great significance due to the fact that it involves a person’s credibility, character, along with ability to be relied on. With that being the case, the intrinsic mechanism of trust is that it reveres whom a person is. Conversely, a person cannot be felt honored when he cannot be trusted.
Let’s put it that way, if as followers of Christ, you’ve doing your very best by allowing God to work through you through His Spirit in order to transform you into the person that He wants you to be and for whatever reason someone whom you know so well cannot trust you with something, there’s no doubt about the fact that would hurt. The reason is that you’d feel like you’re let down by that individual’s ignorance and distrust.
Thus to a much greater degree, the same thing also applies to God. As corrupted we are as humans, we can feel what it is like when cannot be trusted. Imagine for a God who has an absolute integrity in everything. A God who’s operating infinitely above the very weaknesses we’re subject to as humans.
The core foundation of our relationship with God is trust. So that’s the main reason why the bible clearly states that without faith it is impossible to please God according to (Hebrews 11:6). Trusting Him also means depend on Him along with His ability to meet all of our needs.
Furthermore, trusting Him means embracing completely whom He has claimed Himself to be in His infallible Word. So we have to take His Word at face value by letting it decide how we should react when things are not going well for us.
Bear in mind, faith and trust are pretty much the exact same thing. He wants us to rely on Him without reservation since He’s the only One is fully capable of meeting all our needs. See without faith it is impossible to please God.