not. Greek. me. App-105.
troubled. Compare John 11:33 (Himself); John 12:27 (My soul); John 18:21 (spirit). Here it is the heart. In all cases the whole being is meant. See also Luke 24:38.
ye believe. There is no reason for translating the two verbs differently. Both are imperative. "Believe in God, and believe in Me".
believe. App-150.
in. Greek. eis. God. App-98.