Do Christians who are saved still sin, and if they do from time to time after repenting is there anything else we should do? Because to repent is to ask for forgiveness and not sin anymore.
Yes, Christians do sin. The great Apostle Paul struggled with personal sin. Romans 7:15, 17-25 (ESV), 15 "For I do not understand my own actions. For I do not do what I want, but I do the very thing I hate. ... 17 So [...]