The Lord is near to all who call upon Him, to all who call upon Him sincerely and in truth.
Psalm 145:18 AMPC
Context and Charge:
David would know what it felt like to have God close to you as well as when God felt far away. There were times like Paalm 23 when David knew God as a shepherd, guiding and protecting him, and then there were times like Psalm 51, after David had committed adultery with the wife of one of his trusted war lieutenants, that David knew that God did not like what he did. At no time did God move or his nature change, but David found God to be true to his name and nature. With God, sin will always be a hindrance to all that God can do in my life. It does not matter how long I have known God or walked with Him; sin is that thing that separates me from God. God has no favourites when it comes to sin.
It is unconfessed sin that leads to eternal separation from God, but as long as I confess my sin to God, I have an assurance from Him that He will forgive, cleanse and restore. That is the basis of today's verse: God does not change. It is forbidden for God to lie, or to change his mind on a whim, simply because He no longer has capacity or ability to do all He has promised. What He needs from me is that I call on Him in truth; no deception, no hypocrisy, no eye-service. God already knows what I need and who I am, but His desire for a relationship with me means He wants me to talk to Him often. Why would I not take full advantage of what God has made available? What do I have to lose?
Conviction and Conclusion:
That latter bit in today's verse is quite important. Don't call on God only when you are in trouble; don't call on him only when pastors and spiritual leaders ask you to; don't call on him only because you have nothing else to do, or after you have tried all other options and now you are stuck. Call on Him because you know and love Him, and because, from long experience and exposure, you have now tested and are able to confirm that God is good. I must remember that I am dealing with a God of absolute knowledge, who sees the secret motives of my heart. He knows all things, there are no secrets with Him, and He will reward accordingly. God's time of favour is here.