According to Protestant theology, would God bless a peacemaker who used deceit to achieve peace?

In the Sermon on the Mount, Jesus says >“Blessed are the peacemakers, for they will be called children of God” (Matthew 5:9). However, in some situations, people might use deception to bring about peace — for example, concealing the truth to prevent violence or lying to stop conflict. From a Protestant theological perspective, would such a person still be considered a “peacemaker” in the sense Jesus describes in Matthew 5:9? Or would the use of deceit disqualify them from that blessing, given the biblical prohibitions against lying (e.g., Proverbs 12:22; Ephesians 4:25)?