Мои две копейки для Genuinefarmgirl: SOME speakers of US English pronounce the word "skiing" with a rather strong "y" sound in the middle (skee-ying). You should AVOID this with the double ии in Russian words. At the same time, however, don't put a full glottal stop between them, the way that Cockneys say "mitten". So if you can imagine something BETWEEN:

"I'm agree-ying to go skee-ying!"

and

"Cor blimey, the ki'inz done lost their mi'inz, they 'as!"

then you're on the right track for pronouncing богослужении и Иисусе correctly!