gateihan

[← ga- pref + *teihan v (← Prot-Germ *tīhan “to show; to tell; to declare”); cf OE téon, tíon, tíhan “to accuse”; O Sax af-tīhan “to refuse”; OHG zīhan “to accuse, expose” (Mod G zeihen); Icel tjá “to show, exhibit; to tell, report” ← Indo-Europ *deiḱ-; cf Sanskr diśáti “to show; to reveal”; Avest daēdōišt “to show”; Anc Gr δείκνυμι “to show; to indicate; to explain”; Lat dīcere “to declare, state; to say; to speak“]

gateiha - 1 pers, sing, pres, indicat - Jhn. XVI, 25
gateihiþ - 2 pers, pl, imper; 3 pers, sing, pres, indicat - Matth. XI, 4; Jhn. XVI, 13; XVI, 14; XVI, 15
gateiham - 1 pers, pl, pres, indicat - Coloss. I, 28
gateihaidau - 3 pers, sing, mediopass, optat - Rom. IX, 17
gateihats - 2 pers, dual, imper - Luk. VII, 22
gateih - 2 pers, sing, imper - Mrk. V, 19
gataih - 3 pers, sing, p, indicat - Mrk. XVI, 10; Luk. VIII, 47; XIV, 21
gataihun - 3 pers, pl, p, p - Matth. VIII, 33; Mrk. V, 14; VI, 30; XVI, 13; Luk. VII, 18; VIII, 34; VIII, 36; IX, 36; XVIII, 37
gateihands - pres.p.- Cor. I, XIV, 25; Cor. II, VII, 7; Galat. IV, 16; Thessal. I, III, 6
gataihans - p.p.- Luk. II, 26; VIII, 20; XVIII, 14

4.1.1.1. (a)

I class	infinitive	preterite singular	preterite plural	past participle
	normal grade	normal grade	zero grade	zero grade
i/ă	-i-	-a-	zero	zero
additional element of vowel gradation for this class is [-i-]	i + i = ii [ī]	a + i = ai	zero + i = ĭ	zero + i = ĭ
to grab, grasp, grip	greipan	graip	gripum	gripans
to show; to tell, announce	teihan [-i:-]	taih [-ai-]	taihum [-ɛ-]	taihans [-ɛ-]

See the complete paradigm of the conjugation of strong verbs