We are faithfully present in our families when we clean up after each other, make dinner, pay the bills, patiently encourage and even endure the sanctification of other family members (because we know our family exists for the glory of God) even through the teen years (I am speaking to parents and teens here), and seek to love our neighbors well.
You get the idea.
I think of Daniel in Babylon. He was called to have a faithful presence of serving in kingdom of exile, yet was well-positioned to speak prophetically at just the right times. When he had the opportunity, he took it. Similarly, Paul spent much of his time doing the work of church planting, but in Acts 17 was eager to speak into the assembly of academia.
Adopting a posture of faithful presence means we are always looking for an opportunity to speak and act decisively, intentionally, and strategically on behalf of the gospel. All the while, knowing that for long stretches, individuals, and even church communities, are simply called to "Keep Calm and Carry On".
In other words, a faithful presence is about “experiencing and extending the life-changing love of Jesus Christ in our homes, our workplaces, and our communities.”
Keep Calm. Carry on. Proclaim the gospel!