Does God forgive repeated sin?

If you repeat the same sin, does that mean that you aren't saved? Are only those who resist repeated sins Christian? How many times will God forgive your sin, seven times? Seventy-seven times?

Find a church here: https://locator.lcms.org/church

Discord Link to multi-denominational Christian Server (if you join up, be sure to say "Hi" when you find me!) : Discord.gg/Christian

Are you in Tucson, do you need a faithful Lutheran (LCMS) church? Come by and visit, leave me a comment and I can give directions!