As we, slaves to time, don't know timelessness as it really may be.
To us, if there is no time, then there is no change. Truth is, and anything that is not true is not.
There is no time to sin. There is no life as we know it. However...
With God, all things are possible. Much like how we can be humbled and exalted at the same time.
We may very well be in a timeless space where everything has already happened, past and future, and God made it so that we while we are in the timeless 'now', our brain makes it possible to 'image' past and future (illusion of time).
As a Christian we are living in two different worlds all at the same time. The physical which is "time based", and the "eternal realm" while we are sitting on the right hand of God in Christ. Certainly we should be fully aware of all our spiritual eternal surroundings in Christ in the Kingdom of light. We have no problems being fully aware of this time based world, while living in these temporary physical bodies. We should be fully aware of both realms all at the same time, and if we are not then there is a problem in our spiritual growth.