I guess there are two kinds of cost in faith: one is in the kind experienced by Oleg, where your faith and its expression get you into pain and trouble from people who are against it and you suffer persecution, even death. So many of our family suffer badly in this way, more now than ever historically. More martyrs in the 20th century than there were in the previous 19 put together they say.
Then there is the different cost of holding on daily against the odds, when your comfort is absent, when God seems absent, when your world collapses and you feel like you are breaking apart. The easier option is to just forget it and either walk away or just step back for a while. Holding on to the ropes that keep you attached to the boat while the storms are raging, wondering if He will ever command the storms to be still, that’s a cost too.
I guess the two are related. God whatever. God no matter what comes. Always Him. But it is not in my experience a one off decision. It’s a daily one, a moment by moment one to keep the faith, through gritted teeth and desperate tears at times, to hold on and to take what comes trusting He knows what’s happening and He knows what He is doing. That still He is sovereign, He is good, He is faithful and He is entirely worth it all.