Expositor's Bible Commentary Commentary John 14:1

"Let not your heart be troubled: believe in God, believe also in me." — John 14:1 (ASV)

Furthermore, the other disciples must have been equally perturbed, for Jesus added, “Do not let your [plural] hearts be troubled.” The way in which Jesus phrases this implies that they should “stop being troubled” (i.e., they should set their hearts at ease). He then urged them to maintain both their trust in God and in himself. Their uncertainty and discouragement had weakened them, and he wanted to strengthen them against complete collapse in the imminent tragedy.