Spirit Of Truth

Ego rogabo Patrem, et alium Paracletum dabit vobis, ut maneat vobiscum in aeternum, Spiritum veritatis Tertio promittitur nobis Spiritus in magistrum, cum dicitur: Spiritum veritatis. Ideo enim dicitur Spriitus veritatis, quia docet veritatem. Et quia magister iste non solum docet veritatem ad intelligendum, sed suggerit ad volendum et adiuvat ad exsequendum; ideo nota, quod aliquando dicitur Spriitus veritatis, quia docet veritatem; aliquando Spiritus sanctitatis, quia ad bonum movet voluntatem; aliquando Spiritus virtutis, quia adiuvat virtutem. Dabit ergo nobis Spriitum veritatis ad docendum; de quo Ioannis decimo sexto: Cum venerit ille Spiritus veritatis, docebit vos omnem veritatem. Dabit Spiritum sanctitatis ad suggerendum; Ioannis decimo quarto: Paracletus Spriitus sanctus, quem mittet Pater in nomine meo, ille vos docebit omnia, et suggeret vobis omnia, quaecumque dixero vobis. Dabit etiam nobis Spiritum virtutis ad adiuvandum; Actuum primo: Accipietis virtutem Spiritus sancti supervenientis in vos, et eritis mihi testes, etc. Hic est Spriitus, qui adiuvat infirmitatem nostram, ad Romanos octavo. Sanctus Bonaventura, Collationes In Evangelium Ioannem, Cap XVI Source: Here, p603

I shall ask the Father and He shall send another comforter to you, who shall remain with you forever, the Spirit of truth... 1 In three ways the Spirit is promised to us as a teacher when it is said: 'the Spirit of Truth'. For He is called the Spirit of Truth because He teaches the truth. And this teacher not only teaches the truth for understanding but also encourages the will and helps in accomplishing. Therefore note that sometimes He is named the Spirit of Truth because He teaches truth, and sometimes the Spirit of Holiness because He moves to a good will, and sometimes a Spirit of Strength because he aids with strength. Therefore He shall give to us a Spirit of Truth for teaching, concerning which John says in the sixteenth chapter: 'When that Spirit of Truth shall come, He shall teach you every truth.' 2 And he shall give a Spirit of Holiness for supplying the will, as John in the fourteenth chapter: 'The comforter, whom the Father sends in my name, He shall teach you all things, and He shall encourage you in everything I have said to you.' 3 And He gives us the Spirit of strength for aid, in the first chapter of Acts: 'You shall receive power when the Holy Spirit shall come upon you, and you shall be my witnesses.' 4 This is the Spirit which helps our weakness, as in the eighth chapter of Romans. 5 Saint Bonaventura, Observations On The Gospel Of Saint John, Chapter 16 1 Jn 21.7 2 Jn 16.13 3 Jn 14.26 4 Acts 1.8 5 Rom 8.26