The doctrine of the Spirit was further elaborated by [[Saint Augustine|St. Augustine]] in his important work ''De Trinitate'' ''("On the Trinity"),'' in which the Holy Spirit is seen as the bond of union and love between the Father and the Son.<ref>[http://www.religionfacts.com/christianity/beliefs/holy_spirit.htm The Holy Spirit in Christian Theology.]</ref> | The doctrine of the Spirit was further elaborated by [[Saint Augustine|St. Augustine]] in his important work ''De Trinitate'' ''("On the Trinity"),'' in which the Holy Spirit is seen as the bond of union and love between the Father and the Son.<ref>[http://www.religionfacts.com/christianity/beliefs/holy_spirit.htm The Holy Spirit in Christian Theology.]</ref> |