Lebbaeus Thaddeus, also called Jude, was among the twelve apostles commissioned by Jesus Christ to carry the gospel to the lost sheep of the House of Israel. He had a significant role in the ministry in Syria and Mesopotamia, regions within the Parthian Kingdom, which, during most of the New Testament period, included remnants of the Ten Tribes as noted by historical accounts. His work focused on these areas, contributing to the spread of the gospel among the scattered Israelites whose identity had been obscured over time.

Thaddeus, also known as Judas the Zealot, was likely similar to Simon in his zeal, though little is known about him. He is noted for having three names and for asking Jesus a brief sixteen-word question. Christ sent him forth to preach God's message and to assist in His miraculous ministry. Though a minor personality among the apostles, Thaddeus, like the others, had his own special commission from Christ, contributing to the dynamic variety within the unity of the church. As a lesser light among the apostles, he was still essential to God's plan, demonstrating that every individual, whether prominent or obscure, has a vital role in the body of Christ.

In John 14:22, Judas, also known as Thaddaeus as mentioned in Matthew 10 and Mark 3, raises a question about how Jesus would manifest Himself to the disciples. The response in verses 23 and 24 reveals that this manifestation would be spiritual, not merely a one-time event but a continuous presence through God's Holy Spirit. This ongoing revelation would persist throughout the lives of the disciples and extends to all followers, affirming that if anyone loves Jesus, they will obey His word, and both He and the Father will make Their home with them, fostering a deep, abiding relationship.