The Lutheran World Federation (LWF) is a lively and engaged communion of churches. Its member churches share altar and pulpit fellowship and bring their spiritual and material resources together in order jointly to participate in God’s mission in the world. This communion is alive because God calls it into being and sustains it. Living together as a communion of churches is a gift entrusted to the churches. In responding to God’s call, the LWF has committed itself to the ongoing realization of the communion. As a gift, the communion is something we receive; as a task, it is something to which we commit ourselves to labor toward. Since its beginnings, the LWF has grown tangibly in ecclesial density. This is visible in its structures and practices: it can be seen in the constitutional texts and governing structures, as well as in how it meets, works and celebrates together.