Chasidut zu Schemot 1:20

Exodus 1,21. “It was because the midwives had ‎demonstrated fear of the Lord, that He built houses for ‎them.” In these houses the midwives lived and could ‎practice their G’d fearing ways undisturbed. In the event that ‎someone would think that the midwives continued their ‎dangerous way of saving Jewish boy babies on account of the ‎heavenly reward they expected for this, the Torah twice ‎mentioned that they were G’d-fearing, so that there was no ‎element of serving G’d for the sake of the eventual reward.‎