The feast day was instituted by the leaders of the Church, who received their authority to represent the Church by the laying on of hands. It was these same leaders who worked to determine which Christian writings were to be included in the canon of Scripture and who called councils to define core beliefs regarding the nature of Christ, and who instituted the recitation of the Nicene Creed by the faithful and who regulated the format of ecclesiastical forms of worship, who wrote and instituted the hymns to be sung during worship gatherings.
Which is the same claim as your "one true church" competitor, while neither of which are true based on Scripture. We do not even have any inspired record of any apostolic successors being chosen after Matthias was chosen for Judas, even though James was martyred:
Acts 12:1,
2, which was in order to maintain the foundational number of apostles (cf.
Rv. 21:14) and which was by Scriptural means of casting lots. (cf.
Prov. 16:33)
Furthermore, your so-called apostolic successors fail of the qualifications and credentials of manifest Biblical apostles. (
Acts 1:21,
22;
1Cor. 9:1;
Gal. 1:11,
12;
2Cor. 6:4-10;
12:12) (And I fail of the degree of holiness and faith the prima NT church overall exampled.)
In addition, the validity of a church and ministers is not based upon formal descent, anymore than that of a true Jews does, (Romans 2:28,29) but in both cases it rests upon Biblical faith, and as God is able to raise up believers from rocks, (Mt. 3:9) so He can raise up souls who have the faith in the Rock to continue to build His church. Which church actually began because common people rightly discerned both men and writings of God as being so, even in dissent from the historical magisterium, (Mk. 11:28-33) who sat in the seat of Moses over Israel, (Mt. 23:2) who were the historical instruments and stewards of Scripture, "because that unto them were committed the oracles of God," (Rm. 3:2) to whom pertaineth" the adoption, and the glory, and the covenants, and the giving of the law, and the service of God, and the promises" (Rm. 9:4) of Divine guidance, presence and perpetuation as they believed, (Gn. 12:2,3; 17:4,7,8; Ex. 19:5; Lv. 10:11; Dt. 4:31; 17:8-13; Ps, 11:4,9; Is. 41:10, Ps. 89:33,34; Jer. 7:23) </p>
And instead these common people (Mark 12:37) followed prophets and an itinerant Preacher whom the magisterium rejected, and whom the Messiah reproved by Scripture as being supreme, (Mk. 7:2-16) and established His Truth claims upon scriptural substantiation in word and in power, as did the early church as it began upon this basis. (Mt. 22:23-45; Lk. 24:27,44; Jn. 5:36,39; Acts 2:14-35; 4:33; 5:12; 15:6-21;17:2,11; 18:28; 28:23; Rm. 15:19; 2Cor. 12:12, etc.)
Thus to be consistent with how the church began is to be as the common people who did not simply follow leadership, but rightly discerned both men and writings of God as being so in dissent from them, due to their manifest Scriptural substantiation in word and in power. And be like those noble men who loved Truth and thus "searched the scriptures daily, whether those things were so." (Acts 17:11) And which
disallows both Rome and your Orthodox group as being one true church (and the rest of elitists)
When we continue to repent (i.e wrestle against demons and our own sinful passions) we may receive the gifts of grace from the Holy Spirit. This grace purifies our hearts more and more as our repentance carries us forward into deeper and fuller communion with God. The Lord says, "Blessed are the pure in heart, for they are those who see God." Those who see God are those who understand what this saying means: "To the pure, all things are pure; but to the defiled and unbelieving, nothing is pure. Indeed, both their minds and their consciences are defiled" (Titus 1:15).
What does this mean then? "Do not call anything impure that God has made clean." (Acts 11:9) Since we live by faith and are no longer under the law, replacing distinctly pagan festivals with a Church feast day is quite alright.
What? It is you who essentially call those "unclean" who enjoy liberty from your mandate annual observance which is not in Scripture, but which time was that of distinctly pagan annual festivals, which God nowhere said He made clean. The Lord engages in new creations, not reformations of paganism, which He needs no help from.