A devout man, and one that feared God with all his house, which gave much alms to the people, and prayed to God alway. A devout man - Ευσεβης, from ευ, well, and σεβομαι, I worship. A person who worships the true God, and is no idolater.
One that feared God - Φοβουμενος τον Θεον, One who was acquainted with the true God, by means of his word and laws; who respected these laws, and would not dare to offend his Maker and his Judge. This is necessarily implied in the fear of God.
With all his house - He took care to instruct his family in the knowledge which he himself had received; and to establish the worship of God in his house.
Gave much alms - His love to God led him to love men; and this love proved its sincerity by acts of beneficence and charity.
Prayed to God alway - Felt himself a dependent creature; knew he had no good but what he had received; and considered God to be the fountain whence he was to derive all his blessings. He prayed to God alway; was ever in the spirit of prayer, and frequently in the act. What an excellent character is this! And yet the man was a Gentile! He was what a Jew would repute common and unclean: see Acts 10:28. He was, therefore, not circumcised; but, as he worshipped the true God, without any idolatrous mixtures, and was in good report among all the nation of the Jews, he was undoubtedly what was called a proselyte of the gate, though not a proselyte of justice, because he had not entered into the bond of the covenant by circumcision. This was a proper person, being so much of a Jew and so much of a Gentile, to form the connecting link between both people; and God chose him that the salvation of the Jews might with as little observation as possible be transmitted to the Gentiles. The choice of such a person, through whom the door of faith was opened to the heathen world, was a proof of the wisdom and goodness of God. The man who was chosen to this honor was not a profligate Gentile; nor yet a circumcised proselyte. He was a Gentile, amiable and pure in his manners; and, for his piety and charitableness, held in high estimation among all the nation of the Jews. Against such a person they could not, with any grace, be envious, though God should pour out upon him the gift of the Holy Spirit.