Stepping into a church isn't a reliable indicator of anything. Some go to church to..others because keep up a certain appearance, others ..just because grandpa and grandma did,others.. the government "suggests" they do so.
Some attend, because it "looks good"...at least for now.... Then there is the final group, who truly believe and want to please God, through worship and study.
Of course, anyone should know that stepping into a church doesn't make one a Christian, any more than sleeping overnight in a garage, turns somebody into a Ford F-150 !
As time progresses both here and there, virtually all the others except the final group will 'flake away'..leaving the remnant..what God always deals with.
"21 Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven.
22 Many will say to me in that day, Lord, Lord, have we not prophesied in thy name? and in thy name have cast out devils? and in thy name done many wonderful works?
23 And then will I profess unto them, I never knew you: depart from me, ye that work iniquity." (Matt 7:21-23)