Before God created the physical universe that we know, He lived in eternity past, with no time or space as we understand them. Then He created our universe and added humanity to mix to fulfill His purpose in the Creation. After doing so, a period of time elapsed before humans were corrupted by sin in Genesis 3. Maybe that period was days or weeks, and maybe it was centuries; no one knows. We also cannot know how many years have passed since then, but it has been quite a few. Jesus is set to return to do away with evil entirely in the Final Judgment, and then we will spend eternity with Him. Notice that “eternity” is on both sides of “time”.
From an earthly time and space point of view, there is only time, for we have no frame of reference from which to comprehend eternity. Yet from God’s perspective, “time” is but a blip on the radar, so vast is eternity.
This concept isn’t easy to wrap our brains around; it may not even be possible to do so. Yet we can be sure that love endures through all of this.